VESDA
®
LaserSCANNER Product Manual
25
Managing the Exhaust Air
To exhaust air from the detector, use the exhaust ports at the rear or at the bottom of the head
mounting box. Remove the appropriate exhaust port plugs and if required, connect an outlet
pipe to the exhaust manifold. In the event the side port is used as an air exhaust port, press out
the knockout hole. Remove the plug on the exhaust manifold, located at the divider of the
chassis and the termination card. Run a 25 mm (1 inch) pipe through the side port and insert into
the exhaust manifold, ensuring it is a tight fit.
Note:
DO NOT
glue this pipe to the exhaust manifold.
Note:
Some applications may require the air exhausted from the detector to be returned to
the sampling area.
1.7
Wiring Connections
The Termination Card
The termination card acts as the interface for VESDAnet, power supply, relays and the General
Purpose Input (GPI). The LaserSCANNER is available with a 7 or a 12 Relay termination card.
Figure 16 - The terminal card
Legend
A
VESDAnet terminals
B
Power terminals
C
Relay terminals (1 to 4)
D
Relays (1 to 7)
E
Relay terminals (5 to 7)
F
GPI terminal
G
VESDAnet socket
H
FOK LED connectors
I
Relays cable
J
Termination cable
B
A
C
D
E
F
H
G
I
J
